SSM实现条件搜索查询

Controller：

将页面的数据显示以及条件搜索功能带到同一个接口，搜索条件全部封装在keys中，后面通过Map将数据进行转化解析

ServiceImpl:

@Override
    public Map<String, Object> getByPage(String keys, int length, int start)
            throws Exception {

        Map<String, Object> map = new HashMap<String, Object>();
        List<CustomsDeclareBill> list = new ArrayList<CustomsDeclareBill>();
        try {

            CustomsDeclareBillExample customs = new CustomsDeclareBillExample();

            //查询总条数
            int total = customsDeclareBillMapper.countByExample(customs);

            Page page = new Page();
            page.setLength(length);
            page.setBegin(start);
            customs.setPage(page);

            //将搜索条件转换成Map并且传到数据库中进行查询
            Map<String, Object> returnMap = (Map<String, Object>)JSONObject.fromObject(keys);
            returnMap.put("start", start);
            returnMap.put("length", length);

            list = customsDeclareBillMapper.getSelectByPage(returnMap);
           
             //判断查询条件是否为空，如果为空，则分页也为0，返回的数据也为空
            if (list.size() == 0) {
                map.put("recordsTotal", 0);
                map.put("recordsFiltered", 0);
                map.put("aaData", list);
            }

            if (list != null && !list.isEmpty()) {
                map.put("recordsTotal", total);
                map.put("recordsFiltered", total);

                // 设置返回的日期格式
                JsonConfig config = new JsonConfig();
                config.setIgnoreDefaultExcludes(false);
                config.registerJsonValueProcessor(Date.class,
                        new DateJsonValueProcessor("yyyy-MM-dd"));
                //将list集合转换成json数组传到页面
                JSONArray array = JSONArray.fromObject(list, config);
                map.put("aaData", array);
            }

        } catch (Exception e) {
            throw new Exception("查询匹配无结果，分页异常");
        }

        return map;
    }

Mapper.java:

Mapper.xml:

   前端传来的日期格式为String类型，这里要转换格式